I have to take a break from this but further updates are planned and some some things don't really work like picking stickers, and the paint bucket can "skip" over lines in gap modes. I aim to make this the most fun painting cart in tic history so if you have suggested features please post them in the comments.
Controls:
Mouse to paint
Scroll wheel to change brush size
Z to undo (only one step for now)
Clicking the tools can reveal more options. The bucket has a gap mode and the stamp opens up a drawer.